Particle size and shape of iron ore concentrate are effective parameters in the production of quality green pellets. In this research, the effect of particle morphology on green pellet quality was studied. ... kaolin and manganese concentrate). Results are in creating the analytical relations (regression models) having enough high accuracy to ...
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Strong fired pellets were produced by simulating grate-kiln process to supply high-quality charges from some imported manganese ore fines containing high combined water, which was preliminarily ...
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Abstract This article analyzes the works on optimization of the Kachkanar concentrate pellet technology. Three oxidized iron ore pellet technologies are considered. It is established that the quality of pellets can be improved by introducing pellet firing with partial hematite dissociation. The choice of the firing temperature of fluxed pellets containing …
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The behaviors of highly fluxed (basicity 2, 4, 6, and 8) iron ore pellets heat hardened in the temperature range 1100 °C to 1200 °C were examined and are reported here.
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Extensive studies on the reduction of iron ore pellets with hydrogen-rich gases have shown that hydrogen inhibits the growth of iron whiskers [26].Meanwhile, various gangue components have different influence mechanisms on the properties of iron ore pellets during the reduction process [27].The mechanisms by which SiO 2, Al 2 O 3, V 2 O 5, Cr 2 O 3, TiO 2, …
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The integrated iron and steelmaking route involves blast furnace (BF) ironmaking followed by basic oxygen furnace (BOF) steelmaking. The BF uses sinter, pellets, and lump ore as iron-bearing raw materials, and coke and pulverized coal as fuel and reducing agents to produce hot metal with consistent quality for the BOF process.
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DOI: 10.1016/J.MINPRO.2015.06.004 Corpus ID: 92937471; Effect of adding limestone on the metallurgical properties of iron ore pellets @article{Iljana2015EffectOA, title={Effect of adding limestone on the metallurgical properties of iron ore pellets}, author={Mikko Iljana and Antti Kemppainen and Timo S. Paananen and Olli-Pekka Mattila and Erkki Pisil{"a} and Mikhail …
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High manganese steels with > 10% Mn offer a combination of high tensile strength and good ductility, two critical properties for automotive steels. Conventional routes to produce the Mn units used for steelmaking are energy- and capital-intensive. Therefore, a novel methane-based solid-state reduction process for manganese ore pellets is under investigation. It was …
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Pelletization is one of useful processes for the agglomeration of iron ore or concentrates. However, manganese ore fines are mainly agglomerated by sintering due to its …
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Iron ore-coal composite pellets were prepared by cold bonding. Various binders such as lime, Ca(OH)2, slaked lime, dextrose, molasses, and sodium polyacrylate (SPA), alone or in combination, were ...
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The invention discloses a sintering method of iron-manganese ore pellets, which comprises the following steps: s1, crushing and ball milling coarse-grain ferromanganese ore, limestone and return ore, and then performing high-pressure roller milling to obtain a pretreated raw material; s2, adding a binder after optimizing ore blending of the pretreated raw materials, and uniformly …
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This manuscript adopts the method of pellet-sintering to process manganese ore fines, and investigates the optimization of the sintering parameters for manganese ore fines, as …
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Manganese dioxide, carbonate, sulfate and chloride, plus six manganiferous ores from the Minnesota Cuyuna Range were tested as additives to increase the manganese content of iron …
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With rapid development of the pellet production under the background of green development, high-quality iron concentrates were gradually exhausted; thus, using high-silica iron concentrates was expected to be a promising way to relieve resource pressure for pellet production. However, increasing the proportion of high-silica acid pellets into the furnace led to …
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The present work represents a comparative study of impurity removal (sulfur, phosphorus, and carbon) from pig iron melt by the addition of lime powder and reduced fluxed iron ore pellets separately in a 5-kg-capacity induction melting furnace. Two types of reduced flux pellets (80% and 50%) of similar basicity (~3.06) were charged separately into the pool to …
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The quality of iron ore pellets is a parameter of importance and is determined by the properties of the pelletizing mixture and the conditions of heat and burning. The pellets are characterized by ...
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Owing to the depletion of high-grade iron ore quality, many steel plants over the world are now using pellets after beneficiation of low grade ores as blast furnace feed. For the effective utilization of low-grade iron ore resources (59–62% Fe) with high loss of ignition (LOI), mineralogical characteristics play the vital role to improve the process efficiency.
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Manganese ore and CaO were applied as additives to improve the consolidation characteristic of fired nickel‑chromium iron ore pellets. The thermodynamics analysis and systematic process mineralogy were also conducted to further determine the related strengthening mechanism.The results showed that compared with no manganese ore and …
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Effect mechanism of manganese on hydrogen based. Extensive studies on the reduction of iron ore pellets with hydrogen rich gases have shown that hydrogen inhibits the growth of iron whiskers [26] Meanwhile various gangue components have different influence mechanisms on the properties of iron ore pellets during the reduction process [27] The mechanisms by which SiO 2 …
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manganese lump ore regarded as a high-quality manganese ore resource, the proportion of manganese ore fines in obtaining manganese resources is increasing [5–7]. How-ever, manganese ore fines will deteriorate the permeability of the charge in the electric furnace, which is not conducive to the production of forward flow; thus, the ...
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Publication Date: 1974: Personal Author: Schluter, R. B.; Carriere, B. W. Page Count: 23: Abstract: Because most iron ore produced in the United States is marketed as low-manganese pellets, this investigation was carried out to determine the effects of adding manganese in several forms to iron ore pellets during the balling process.
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The preferable reduced nickel‑chromium‑manganese iron ore pellets can be prepared by reduction roasting at 1150 °C for 60 min with 1.0C/Fe, binary basicity of 0.30 and …
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The iron and steel industry is the main driving force for the development of any country [], is an important symbol of the national economic level and comprehensive national strength, and has an important position in economic development.Resource problem is a common challenge facing the world iron and steel industry [], and pellet is an important metallurgical raw …
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46 manganese ore fines into agglomerate [13]. Therefore, the effect of sintering conditions on the 47 traditional manganese ore sintering behavior has been studied by many scholars. Ahmed A [14] 48 discovered that increasing the amount of manganese sintered ore in electric furnaces is beneficial in 49 reducing energy consumption and the ...
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The iron ore production has significantly expanded in recent years, owing to increasing steel demands in developing countries. However, the content of iron in ore deposits has deteriorated and low-grade iron ore has been …
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A brief introduction to recent developments in iron ore pelletizing is provided in this chapter, including the world output of fired pellets, pellet production processes, preparation of pellet feed, inorganic and organic binders, and new additives. Throughout the chapter, the authors have used a difficult pellet feed, that is, a Brazilian specular hematite concentrate, as an …
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Influence of Pellet Size on Quality and Microstructure of Iron Ore Pellets Srinivas DWARAPUDI,1) T. Uma DEVI, 2)S. MOHAN RAO1) and Madhu RANJAN 1) Research and Development, Tata Steel, Jamshedpur-831007 Jharkand state, India. E-mail: srinivasd@tatasteel 2) Research and Development, JSW Steel, Bellary-583275 …
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When the amount of iron oxide increases in the manganese ore sintering system, the main bonding phases will transition to manganese iron spinel or iron-manganese oxide (Fe x Mn 3-x O 4). This also indicates that the content of iron oxide has a significant impact on the …
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Iron ore pellets are used in large proportion, which is continue to rise because of the lack of supply of high-quality lump ores. The term iron ore pellet refers to he thermally agglomerated material formed by heating a variable mixture of iron ore, limestone, olivine, bentonite, dolomite, and miscellaneous iron bearing materials in the range ...
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The results show that, compared with traditional sintering, the pellet-sintering process can significantly reduce the coke level while ensuring the quality of sinter.
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